Pumping means for oil wells



1937- E. H. CARTER 2,088,892

PUMPING MEANS FOR OIL WELLS Filed Aug. 6, 1936 2 Sheets-Sheet l Afton/0 11s 2 Sheets-Sheet 2 Invenior Eerlfl (Zr/e E. H. CARTER PUMPING MEANS FOR OIL WELLS Aug. 3, 193 7.

Filed Aug. 6, 1936 f w M K Cii Patented Aug. 3, 1937 UNITED: STATES PATENT OFFICE 2 Claims.

The present invention relates to new and useful improvements in the art of producing oil wells, particularly in areas where both gas and all producing sands are found, and has for one of its important objects to provide a novel method of utilizing the gas for elevating or materially assisting in elevating the oil in the well.

Another very important object of the invention is to provide novel means for carrying out the aforementioned method.

Other objects of the invention are to provide an oil well producing device of the character described which will be comparatively simple in construction, strong, durable and reliable in use.

All of the foregoing and still further objects and advantages of the invention will become apparent from a study of the following specification, taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the a several views, and wherein:--

Figure 1 is a view in side elevation of the device, the packer between the outer tube of said device and the casing, together with said casing, being shown in vertical section.

Figure 2 is a horizontal sectional view, taken substantially on the line 2--2 of Figure 1.

Figure 3 is a view in horizontal section, taken substantially on the line 3.-3 of Figure 1.

Figure 4 is a vertical sectional view, taken substantially on. the line 4-4 of Figure 1.

Figure 5 is a vertical sectional view, taken substantially on the line 55 pf Figure 1.

Referring now to the drawings in detail and Figure 1 thereof in particular, it will be seen that the reference numeral I designates gas producing strata and 2 designates oil producing strata. Between the gas and oil producing strata I and 2 is non-producing strata 3. The reference numeral 4-designates a casing which is sunk into the ground substantially to the depth of the oil strata 2. At the gas producing strata I, the casing 4 is perforated, as'at 5, for the entrance of gas.

Mounted in the lower portion of the casing 4 and connected by a coupling '6 to the lower end of a string of tubing 1 is an elevating unit which is designated generally by the reference numeral 8. The unit 8 extends below the lower end orthe casing 4 into the oil strata 2. At an intermediate point, a packer 9 of suitable construction is provided between the unit 8 and the casing 4.

The unit 8 comprises spaced inner and outer tubes III and II, respectively, the former extending above the latter for connection with the coupling 6, as illustrated to advantage in Figure 4 of the drawings. Mounted on the upper portion of the inner tube I0 is a dome I2 the lower portion of which is externally threaded. A coupling I3 connects the outer tube I l to the dome I2. The coupling I3 is provided with an internally tapered lower portion I4 on which a packer l5'is mounted. An adjusting nut I6 for the packer I5 is threadedly mounted in the upper portion of the coupling I3, a washer I'I being interposed between said adjusting nut and said packer. At a point above thepacker 9, the outer tube II is perforated, as at I8, for the entrance of gas.

Threadedly mounted on the lower end portion of the inner tube III is an extension I9 (see Figure 5). A coupling connects the extension l9 to the lower end of the'outer tube I I. The lower portion of the inner tube I0 is perforated,'as at 2|, for the entrance of gas. Threadedly mounted on the lower end portion of the extension I9 is a tapered tip 22 in the upper portion of which a valve seat 23 is provided. A ball valve 24 is engageable on the seat 23. Upward movement of the valve 24 is limited by a. stop element 25.

It is thought that the operation of the invention will be readily apparent from a consideration of the foregoing, particularly to those skilled in the art to which said invention pertains. Gas under pressure from the strata I enters the casing 4 through the perforations 5 and passes into the outer tube II through the perforations Hi therein. Of course, oil from the strata 2 enters the device at its lower end through the tip 22, said oil flowing upwardly past the ball valve 24. The gas which has entered the outer tube II flows into the inner tube I0 through the perforations 2|, picking up the oil and elevating the same. The ball check valve 24 positively prevents flowing of the'oil and gas in the opposite direction, or downwardly'through the tip 22.

It is believed that the many advantages of the invention will be readily understood and although a preferred embodiment is as illustrated and described, it is to be understood that changes may be resorted to which-will fall within the scope of the invention as claimed.

What is claimed is:-

1. An oil well producing device comprising a casing having perforations therein for the entrance of gas, an elevating unit mounted in said casing, said unit including spaced inner and outer tubes, the outer tube being spaced from the casing, said outer tube having perforations therein for the entrance'of the gas, the inner tube having perforations in its lower portion for the entrance of said gas, said inner tube being open at its lower end for the entrance of oil, means for closing the outer tube at its upper end, and a packer between the outer tube and the casing at a point below the second-named perforations.

2. An oil well producing device comprising a casing having perforations therein at an intermediate point for the entrance 01' gas, an elevating unit mounted in said casing, said unit including spaced inner and outer tubes, the outer tube being spaced from the casing, the inner tube being open at its lower end for the entrance oi! oil and extending above the outer tube at its upper end, means for connecting the inner tube to a string 01' tubing, a concentric dome fixed on the upper portion of the inner tube, a coupling threadedly conouter tube, the outer tube having perforations in its upper portion for the entrance 0! the gas, the inner tube having perforations in its lower portion for the entrance of said gas, a tapered tip on the lower end of the extension, a seat in said tip, and a ball check valve engageable on said seat.

EARL H. CAR'I'ER. 

